Direct shear strength test on rocks along discontinuities, under laboratory conditions

2014 ◽  
Vol 9 (3) ◽  
pp. 139-150 ◽  
Author(s):  
Ildikó Buocz ◽  
Nikoletta Rozgonyi-Boissinot ◽  
Ákos Török ◽  
Péter Görög
Keyword(s):  
Shear Strength ◽  
Strength Test ◽  
Direct Shear ◽  
Shear Strength Test ◽  
Laboratory Conditions

scholarly journals Direct Shear Strength of Clay Reinforced with Coir Fiber

UKaRsT ◽  
2020 ◽  
Vol 4 (2) ◽  
pp. 151
Author(s):  
Anita Widianti ◽  
Willis Diana ◽  
Maratul Hasana
Keyword(s):  
Shear Strength ◽  
Dry Weight ◽  
Friction Angle ◽  
Strength Test ◽  
Fiber Content ◽  
High Plasticity ◽  
Coir Fiber ◽  
Direct Shear ◽  
Maximum Increase ◽  
Shear Strength Test

Indonesia is the largest coconut producing country in the world. However, the resulting coir waste is still rarely used for structural materials. This research studied the effect of random inclusion of coir fiber on the shear strength of clay with high plasticity. The carried test in this study is a direct shear strength test. The fiber content variations used are 0%, 0.25%, 0.50%, 0.75%, and 1% of the dry weight of the mixture with a fiber length of between 30 mm to 50 mm. The results show that the reinforcement of coir fiber can increase the cohesion and friction angle. The maximum increase in cohesion value was obtained at fiber content of 0.75%, which was 39.66%. The increase in the value of the friction angle was obtained at 1% fiber content, which was 46.67%. The optimum coir fiber content was achieved at the fiber content of 0.75%. With this content, the value of the shear strength reaches its maximum with an increase of 39.4% at a normal stress of 8.071 kPa.

Research on the Package of High Voltage SiC JBS

2015 ◽  
Vol 713-715 ◽  
pp. 1038-1041
Author(s):  
Gang Chen ◽  
Ya Nan Li ◽  
Lin Wang ◽  
Ao Liu ◽  
Song Bai ◽  
...  
Keyword(s):  
Shear Strength ◽  
High Voltage ◽  
Wire Bonding ◽  
Strength Test ◽  
Strength Measurement ◽  
Shear Strength Test ◽  
Materials Used

According to the application of the high voltage SiC devices, studying the package of three kinds of SiC dies with different metals. Experiments show that all die wire bonding and shear strength measurement up to standard, and provide three kinds of packages for different applications, at the same time, filling the needs of producing. The purpose of the shear strength test is to determine the integrity of materials used to attach SiC die to package substrates.

Validation of the Louisiana Interlayer Shear Strength Test for Tack Coat

2018 ◽  
Author(s):  
Louay N. Mohammad ◽  
Mostafa A. Elseifi ◽  
Ramendra Das ◽  
Wei Cao ◽  
◽  
...  
Keyword(s):  
Shear Strength ◽  
Strength Test ◽  
Shear Strength Test ◽  
Interlayer Shear ◽  
Tack Coat ◽  
Interlayer Shear Strength

Development of a shear strength test method for NITE–SiC joining material

2011 ◽  
Vol 417 (1-3) ◽  
pp. 383-386 ◽  
Author(s):  
Hun-Chea Jung ◽  
Tatsuya Hinoki ◽  
Yutai Katoh ◽  
Akira Kohyama
Keyword(s):  
Shear Strength ◽  
Strength Test ◽  
Test Method ◽  
Shear Strength Test

A Novel High Performance Die Attach for Ceramic Packages

1999 ◽  
Vol 122 (2) ◽  
pp. 168-171 ◽  
Author(s):  
J. Z. Shi ◽  
X. M. Xie ◽  
F. Stubhan ◽  
J. Freytag
Keyword(s):  
Shear Strength ◽  
High Performance ◽  
Isothermal Solidification ◽  
Strength Test ◽  
Process Time ◽  
Step Process ◽  
Shear Strength Test ◽  
Die Attach ◽  
Present Technique ◽  
Total Process

A novel two-step process based on isothermal solidification is developed for die attachment of ceramic package. With a simple design of the multilayer system, silicon chip could be bonded onto the allumina substrate in between 200°C and 300°C. The total process time is less than 15 seconds during which the actual assembly time is within one second. Most of the samples can pass the shear strength test specified by MIL STD 883D. All the samples could pass 1750 cycles between −55°C and 125°C with slight degradation in die shear strength after the test. The microstructures of the bonds are characterized with metallographical investigation. Comparisons are made between the present technique and the Au/Si eutectic bonding. [S1043-7398(00)01202-0]

Study on In Situ Shearing Strength Test for the Retaining Wall Bottom in a Bank Revetment Project

2012 ◽  
Vol 214 ◽  
pp. 333-337
Author(s):  
Guang Zhang ◽  
Jun Rong Ma ◽  
Jing Xi Chen ◽  
Hua Lin Zhou ◽  
Dong Hua Wang
Keyword(s):  
Shear Strength ◽  
Retaining Wall ◽  
Friction Angle ◽  
Strength Test ◽  
Composite Foundation ◽  
Undisturbed Soil ◽  
Shear Strength Test ◽  
Geological Conditions ◽  
Shearing Strength

To obtain the necessary shear strength parameters of the retaining wall bottom in a bank revetment project, in-situ shearing strength test must be conducted. There are 3 kinds of foundations. One is undisturbed soil foundation, and the other two are composite foundations. Due to the limited of the engineering conditions, each kind of foundation has prepared one specimen only. So the single shearing strength test can't separate cohesion c and friction angle φ. To solve this problem, a method which is a combination of shear strength test and sliding strength test is used. Sliding strength test is carried on specimens that have already failed after shearing strength test. This test is carried in wet conditions and cohesion values and friction angle values are obtained. In addition, the influence of the processing of composite foundation to equivalent friction coefficient is analyzed. Test result can be referenced by bank revetment projects which have similar geological conditions.

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